Uh... This is the problem with manga nowdays, they make harem and then everytimes in a fight mc would get hurt all of them screaming, ignoring the boss battle and start a dumb conversation which was not going to solve anything of their situation. You might says their just amateur, but they already have many case life threatening situation before so this is just a stupid for them to not learn anything and the only thing saving them is plot amort as thick as their stupidity.